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Phylogenetic relationships of four endemic genera of the Phasianidae in China based on mitochondrial DNA control-region genes
Ist Teil von
Molecular phylogenetics and evolution, 2009-11, Vol.53 (2), p.378-383
Ort / Verlag
United States: Elsevier Inc
Erscheinungsjahr
2009
Quelle
Access via ScienceDirect (Elsevier)
Beschreibungen/Notizen
The taxonomic status of some genera within the Phasianidae remains controversial. To demonstrate the phylogenetic relationships of four endemic genera (
Tetraophasis,
Ithaginis,
Crossoptilon and
Chrysolophus) and other 11 genera of Phasianidae in China, a total of 1070 nucleotides of mitochondrial DNA (mtDNA) control-region genes were sequenced. There are 376 variable sites including 345 parsimony sites. The genetic distance ranged from 0.067 (
Chrysolophus and
Phasianus) to 0.181 (
Perdix and
Bambusicola) among the 15 genera. Maximum likelihood method was used to construct a phylogenetic tree, which grouped all the genera into two deeply divergent clades.
Perdix was shown to be a non-partridge genus. Alternatively, it appears ancestral to either partridges or pheasants. The sibling taxa of the four endemic genera were
Lophophorus,
Tragopan,
Lophura and
Phasianus, respectively. Calibrated rates of molecular evolution suggested that the divergence time between the four genera and related taxa was 4.00–5.00
million years ago, corresponding to the Pliocene. Considering their molecular phylogenetics, fossil and geographical distribution patterns, the four endemic genera might have originated in the southwestern mountains in China.